| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| WA-01 | DEM | 360,658 | 63.0% | D+26.3 | |
| WA-02 | Rick LarsenDEM | DEM | 413,220 | 63.8% | D+28.0 |
| WA-03 | DEM | 415,904 | 51.7% | D+3.9 | |
| WA-04 | REP | 295,052 | 52.0% | R+98.2 | |
| WA-05 | REP | 397,286 | 60.6% | R+21.3 | |
| WA-06 | DEM | 422,622 | 56.7% | D+13.6 | |
| WA-07 | DEM | 419,819 | 83.9% | D+68.1 | |
| WA-08 | Kim SchrierDEM | DEM | 416,277 | 54.0% | D+8.2 |
| WA-09 | Adam SmithDEM | DEM | 279,298 | 65.4% | D+97.9 |
| WA-10 | DEM | 348,044 | 58.5% | D+17.3 |